I would like to deposit some coins but
I'm not sure what address to use. Do I simply create a new one and
deposit the coins into it? Thank you for your help.

Yes you are exactly right. First create a receive address in your wallet and copy that. Then when you do the term deposit send it to that address which actually means you are sending it to yourself. When you do the term deposit choose how many coins and choose for how long. You will get a popup explaining what you are doing and what the outcome will be. Once you push through and complete the term deposit in the overview tab and in the lower section of the wallet you can view and track your term deposit(s).

I would like to deposit some coins but
I'm not sure what address to use. Do I simply create a new one and
deposit the coins into it? Thank you for your help.

Yes you are exactly right. First create a receive address in your wallet and copy that. Then when you do the term deposit send it to that address which actually means you are sending it to yourself. When you do the term deposit choose how many coins and choose for how long. You will get a popup explaining what you are doing and what the outcome will be. Once you push through and complete the term deposit in the overview tab and in the lower section of the wallet you can view and track your term deposit(s).

Hi. I placed a Deposit on 07.02.2010 for 365 days. In the wallet window "ROicoin termdeposits" in the field "Estimated date" specified 2019/05/21. Why the Wrong date of closing of the Deposit? Screenshots are included

That's because, when you put a term deposit, you put it for a number of block calculated using the theorical blockchain time (500 blocks = 60k seconds). However, the blockchain is a bit slower than that (500 blocks = 70k seconds), so the number of theoritical blocks for 365 days will be elapsed a few weeks/months later, if the blockchain continues at the same speed. If they fix the difficulty algorythm (and I hope they will), the closing date will move.